Heat the 2 cups of the milk and the mint to a gentle simmer. Place the remaining 1 cup of milk in the freezer to chill very well. Turn off the heat and let flavor infuse for 30 minutes. fit remaining ingredients. Gradually pour the mint flavored milk into the condensed milk, whisking to make smooth. Whisk in the remaining one cup of cold milk. Freeze in an ice cream maker according to manufacturers directions. In the last few moments of churning, add the chocolate shavings or mini chips. Transfer ice milk to a container and place in freezer for a more firm ice cream, or eat when freshly churned. Enjoy!